[vtkusers] Redraw vtkXYPlotActor with new data

[Poseidonius]

Hi,

I wrote a small python script visualizing some data with vtkXYPlotActor. But how
can I refresh my diagram after a new set of data was received?

Thank you!

Best wishes

Poseidonius


_x = numpy.array([0.0, 5.0])
_xData = vtk.vtkDataArray.CreateDataArray(vtk.VTK_FLOAT)
_xData.SetNumberOfTuples(len(_x))
_y0 = numpy.array([0, 1.0])
_y0Data = vtk.vtkDataArray.CreateDataArray(vtk.VTK_FLOAT)
_y0Data.SetNumberOfTuples(len(_y0))
for i in range(len(_x)):
    _xData.SetTuple1(i,_x[i])
for i in range(len(_x)):
    _y0Data.SetTuple1(i,_y0[i])
_fieldData0 = vtk.vtkFieldData()
_fieldData0.AllocateArrays(2)
_fieldData0.AddArray(_xData)
_fieldData0.AddArray(_y0Data)
_dataObject0 = vtk.vtkDataObject()
_dataObject0.SetFieldData(_fieldData0)

plotActor = vtk.vtkXYPlotActor()
...
plotActor.AddDataObjectInput(_dataObject0)

renCamera = vtk.vtkRenderer()
renCamera.SetLayer(0)
renCamera.AddActor(actCamera)
renDiag = vtk.vtkRenderer()
renDiag.AddActor(plotActor)

while(1)
    #receive new data
    ....
    renDiag.DrawOn()